// Copyright (C) 2025 Kumo inc.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <cstddef>
#include <sstream>
#include <string>
#include <utility>

#include "config.hpp"
#include "eol.hpp"
#include "memory_input.hpp"
#include "tracking_mode.hpp"

namespace rothar
{
   namespace internal
   {
      [[nodiscard]] inline std::string make_argv_source( const std::size_t argn )
      {
         std::ostringstream oss;
         oss << "argv[" << argn << ']';
         return std::move( oss ).str();
      }

   }  // namespace internal

   template< tracking_mode P = tracking_mode::eager, typename Eol = eol::lf_crlf >
   struct argv_input
      : memory_input< P, Eol >
   {
      template< typename T >
      argv_input( char** argv, const std::size_t argn, T&& in_source )
         : memory_input< P, Eol >( static_cast< const char* >( argv[ argn ] ), std::forward< T >( in_source ) )
      {}

      argv_input( char** argv, const std::size_t argn )
         : argv_input( argv, argn, internal::make_argv_source( argn ) )
      {}
   };

   template< typename... Ts >
   argv_input( Ts&&... ) -> argv_input<>;

}  // namespace rothar
